Security of even the most sensitive data often relies on a short sequence of characters - the access password. Careful selection of the password is a crucial operation. The password should resist a brute force attack (trying all the combinations), so it can't be very short and has to be combinatorically strong (should contain cahracters from as wide set as possible; fe, combinations of numbers and letters are much stronger than combinations of numbers only of the same length). It should also resist attack by guessing. (So no names of your children, your spouse, your pets, etc.; no phone numbers, no birthdates. Attackers are trying these first. Also avoid using words; a kind of brute force attack, called dictionary attack, uses automatical trying of all words from a wordlist. Don't think you are secure because there are hundreds of thousands of words; you probably used something from the basic 10,000 set anyway, and programs used for these attacks are patient fellows.) This script helps you in finding out random combinations of numbers/letters, giving you cryptographically strong passwords. Remember to change your passwords at least occassionally, and to not use one password for many locations. I know, it is comfortable; but attackers know this too, and if they find a password somewhere (post-it note, logfile on a computer, eavesdropped communication (even accidentally)), they know they have decent probability you used it elsewhere too.)